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3 Sheets-Sheet I.

G. A. DAVIS.

CHASE-SECURING DEVICE FOR PRINTING MACHINES.

(No Model.)

Patented Oct. 19, 1886.

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All 11946436.

3 Sheets-Sheet 2.

(No Model.)

0. A. DAVIS.

CHASE SECURING DEVICE FOR PRINTING MACHINES.

Patented Oct. 19, 1886 wmwmmmmmmwmmmwwmwwwmmmmmmmwmmmww m a M 0m (No Model.) 3 sheets-sheet 3.

G. A. DAVIS.

CHASE SECURING DEVICE FOR PRINTING MACHINES.

No. 351,166. Patented Oct. 19, 1886.

N PETERS. Pholo-Llmographar. Walhmgmn. 04c.

r 1 tion- Fi 2 a artial side view showin ver- UNITED STATES PATENT OFFICE.

CARROLL A. DAVIS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE COLTS PATENT FIRE ARMS MANUFACTURING COMPAXY, OF SAME PLACE.

CHASE-SECURING DEViCE FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 351,166, dated October 19, 1886.

Application filed January -21, 1886.

To aZZ whom it may concern:

Be it known that I, CARROLL A. DAVIS, of Hartford, in the county of Hartford and State of Connecticut, have invented new I unprovements in Chase-Securing Devices for Printing- Machines; and I do hereby declare the follow ing, when taken in connection with accompanying two sheets of drawings, and the letters of reference marked thereon, to be afull,clear,

I0 and exact description of the same, and which said drawings constitute part of this s pecification, and represent, in

Figure 1, a front view of so much of the press as is necessary to illustrate the inventical central section through the bed; Figs. 3,

4, and 5, modifications of the invention.

This invention relates to an improvement in that class of printing-presses in which the bed to receive the chase is in nearly a vertical positionsueh, for instance, as the press commonly known as The Universal Printing-Machine. The invention, however, is applicable to other presses having a similar arrange- 2 ment for the chase. In this class of resses it is necesssry that the chase shall be firmly held upon the bed or frame, and yet it should be so that it may be readily introduced or re moved, and to do so the pressman should be able to apply both his hands to the chase while introducing and removing it-that is to say, his hand should be free from the securing devices, and the securing device should readily adjust itself to any variation in the size of the 3 5 chase-such, for illustration, as that caused in the use of the modern metal furniture-as in fastening the type into the chase with the same the sides of the chase are often bent'or sprung outward, so as to enlarge the chase more or 40 less. One great difficulty in applying a chase and securing device, particularly in the style of press mentioned, is the limited space between the distributing-cylinders and the top of the bed, which is also limited by the car- 5 riage-ways attached to the sides of the bed, practically inclosing the device heretofore employed for securing the chase. The diffient ties thus attending the securing of the chase have resulted in much annoyance and frequent 5o accidents.

Serial No. 139,394. (No model.)

The object of my invention is such an arrangement and construction of the chasesecuring device that it may be conveniently operated, readily adjusted to the chase, and hold it firmly to the press frame or bed, combined with mechanism by which the device may be released or engaged by the foot of the pressman, and thereby leave both his hands free to handle the chase, and in such a construction of the chase-securing device, as more fully hereinafter described, my invention consists.

In illustrating the invention I show only the frame of the press, as the mechanism for operating the press constitutes no part of my invention.

A represents the bed, upon which is formed a shoulder, a, at the bottom, upon which the lower edge of the chase B may rest. The bed is here represented as vertical and directly in rear of the face of the bed, and vertically through the bed a rod, C, is arranged free to move up and down and properly guided therein. Its upper end is turned forward to form a graspingj aw, D, which overhangs the front face of the bed, and so as to grasp the upper edge of the chase and clamp the chase against the shoulder it below. \Vithin the bed and around the red C is a recess, 0, forming a shoulder, (1, near its upper end. In this reeess around the rod a helical or other suitable spring, E, is arranged, taking its bearing, at its upper end, on the shoulder d. The rod extends through the frame below the chase, and is there provided with a nut or collar, F, against which the lower end of the spring rests, and so that the power of the spring is applied to the collar, tending to force the rod and its jaw D downward into the grasping position. The movement of the rod may be limited by a stud, e, projecting therefrom into a slot, f, in the frame, and this stud and slot may also serve to prevent the rotation of the rod,thereby enabling the rod to be made cylindrical, and so that the fitting of the rod to its bearing in the bed is a cheap and simple operation. The lower end, 71 of the rod is seated on one arm, G, of a lever, which extends from the rod to one side, say to the right, and in a plane substantially parallel with the plane of the bed, the said lever hung upon a fulcrum, i, and

so as to swing thereon in the said plane parallel with the plane of the bed. The other arm, H, of the lever extends to near one side of the frame, and from that arm a rod, Z, extends downward and is hung to a foot-pedal, J, the

pedal extending to the front ofthe machine at one side into a convenient position for the pressman, and out of the way of the pedal by which he works the machine, in a convenient position for him to place his foot upon the pedal when introducing or removingthe chase.

In introducing the chase the pressman, holding it by both hands, places the lower edge upon its rest or shoulder a, and with his foot upon the pedal J presses down thereon, so as to raise the jaw D, as seen in broken lines, Fig. 2; then he brings the chase to its bed, and, raising his foot, releases the jaw and permits it to come to a grasp upon the upper edge of the chase, as seen in Fig. 2, the power of the spring being sufficient to firmly hold the jaw in its grasping position. To remove or adjust the chase, he simply applies his foot to the pedal to release the chase, and with both hands free to remove or adjust the chase as he may desire. By this arrangement, whereby the pressma'n is enabled to use his foot in placing and removing or adjusting the chase, thereby leaving both hands free for such adjustment of the chase, a very great advantage is attained over other adjusting devices which require the hand of the pressman to manipulate.

Instead of arranging the springclasp on the end of a rod, as shown, so that the upward movement of the rod will raise the jaw, the

vjaw may be in the form of a lever, as seen in Fig.3, with a connecting-rod, Z. from the rear arm through a lever, such as G H, to the pedal. In this arrangement the order of the lever G H is changed, as indicated in Fig. 3, and so that the depression of the pedal will draw down the rear arm of the grasping-jaw, or the.

order of the lever G H may be retained and that of the pedal changed, as seen in Fig. 4, it only being essential to my invention that whereby the pedal'at one side of the machine may impart the requisite movement to the aw. J The spring E, which operates to draw down the jaw D, may be applied at some other point than in the recess, as described, say, for illustration, as in Fig. 5, in which the spring is illustrated as attached to the lower end of the rod.

In some cases it may be desirable to arrange a spring beneath the pedal as acounter-balance therefor. This may be done as indicated in broken lines, Fig. 2, but it is not essential to the invention.

I claim 1. In a printing-press, substantially such as described, in combination with the chase and bed, a spring-jaw arranged in an opening through the bed in a plane parallel with the chase, and a pedal below the bed in connection with said spring-jaw, substantially as described.

2. In a printing-press, substantially such as described, incombiuation with the chase and bed, a spring-jaw arranged in an opening through the bed in a plane parallel with the chase, the lever G H, the rod 1, and the pedal J, arranged and connected substantially as described.

3. In a printing-press, substantially such as described, in combination with the bed constructed with a shoulder or rest for the chase near its lower edge, a spring-jaw above the bed, adapted to grasp upon the upper edge of the chase, a lever, G H, onearm in connection with said spring-jaw, and the pedal J at one side of the press in connection with said lever G H, substantially as described, and'whereby the depression of the pedal will raise the said jaw from its grasping position.

7 CARROLL A. DAVIS.

Witnesses: G. J. EHBETS, F. F. KNoUs. 

